Cork cambium

[statesman]

In the Campbell text, it says
"Unlike the vascular cambium, cells of the cork cambium do not continue to divide; thus, there is no increase in its circumference."

I don't get it. Cells of the cork cambium do divide, don't they? They produce the cork cells.

[Nawal]

The cork cambium cells that are produced for the phloem or epidermis .they are boxlike and became impregnated with suberin[a waxy substance that make the cell impervious to moisture],these cells die shortly after they formed. So they don’t dived .

[statesman]

Those are the cork cells, aren't they, not cork cambium?

[mith]

I think statesman is right, cambium by definition produces new cells..

[Linn]

well ya thats what it produces and then it becomes bark which purpose is protection and to prevent water loss, so the cell does not need to keep living since its function is done.

Can sorta liken it to our nails.

[statesman]

Yup...
So, Campbell's wrong?

[Linn]

AHH
No he's not

[SU_reptile]

As far as I remember from General botany vascular cambium, or more profesionally named the phellogen, does divide.
As well as vascular cambium, phellogen divides more often in the way we call the pericline division i.e. the division increases the number of layers of cells - it's parallel to the surface of the stem. In that way the phelloderm and the phellem (cork) are produced by the phellogen. But, as we all know, as the plant gains in girth, cambium and phellogen need to undergo a series of anticline divisions i.e. the division is perpendicular to the surface of the plant. By the means of anticline division cambium and phellogen produce new cells in their circles (in the same row/layer).
So taking that into consideration and comparing it with information stated in Campbell's book, that second one is wrong. Of course if you quoted that sentence to us.

[SU_reptile]

The cork cambium cells that are produced for the phloem or epidermis

I don't understand that sentence.

[SU_reptile]

OK. I found the part suggesting that there is no further division in cork cambium (phellogen). But there is also written that as stem or root gain in girth, old phellogen lose its meristematic properties and new one arises (from secondary phloem or deeper layers of cortex that didn't rupture). That phenomenon repeats and characteristic creation arises, namely the rythidome.
We need to emphasize that such processes are not applied to every kind of plant.
I took a look at my reference books and compare those informations. Eventually, it is true that both phenomena occur in plants growth.